ISP 203A Final Exam || Questions & Answers (Rated A+)

ISP 203A Final Exam || Questions & Answers (Rated A+) ISP 203A Final Exam || Questions & Answers (Rated A+) What is science? - ANSWER - A body of knowledge that aims at understanding natural world(what we are capable of testing) What are the difference between hypotheses and theories? - ANSWER - Hypothesis: A proposed explanation for a narrow set of phenomena. Theory- broad explanation for a wide range of phenomena Hypotheses must be: - ANSWER - -Testable(based on natural world) -Falsifiable(must be able to be disproved) Is plate tectonics a theory or a hypotheses? - ANSWER - Theory What is the mechanism behind plate tectonics? - ANSWER - Thermal convection or Slab pull How does density relate to convection currents? - ANSWER - Thermal convection-(forces within the mantle moving plate apart and bringing them together) Substances expand as they are heated, changes in density of the substance, convection currents within the substance arise from differences in density. What is the difference between exponential growth model and logistic growth model? - ANSWER - Both start exponential, but logistic has a carrying capacity, which causes it to level off near that mark. What are the 3 periods of human population growth, identified by demographers, attributed to? - ANSWER - -Pre agricultural period*(Migration) -Agricultural period(Domestication of plants and animals) -Industrial period(Technology advance) What is the main problem with rapid human population growth? - ANSWER - That the world has a carrying capacity What is an ecological footprint? - ANSWER - Area of land needed to supply resources consumed and to absorb waste. How do ecological footprints vary between countries? - ANSWER - As countries become more developed their footprints are increasingly determined by the extraction of fossil fuels and the generation of electric power. What proportion of the average U.S. citizen ecological footprint comes from food and energy? - ANSWER - 87%